{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1140-2AP00-ZW98","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1140-2AP00-ZW98","canonicalUrl":"https://aoctrl.com/siemens/3RH1140-2AP00-ZW98","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1140-2AP00-ZW98","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RH1140-2AP00-ZW98 auxiliary contactor, size S00, 4 NO instantaneous contacts, screw and snap-on mounting, IP20 front protection.","salesMarkdown":"Four normally-open instantaneous contacts give you the basic building block for interlocking, status feedback, or PLC input isolation. There are no delayed, leading, or lagging contacts here — every contact closes and opens with the armature stroke, so timing is governed by the coil response of whatever device drives it. The contact ratings are given per voltage, not as a single blanket current. At 24 V rated value it carries 10 A — that's the highest continuous current on the list and typical for DC control circuits. At 230 V rated value (50 Hz) it's 6 A, and at 400 V rated value it's 3 A. The 690 V rated value column drops to 1 A. These are the thermal current limits for the contact stack; derate further if you're switching inductive loads like small contactor coils or solenoid valves without suppression. Surge voltage resistance is rated at 6 kV, which aligns with basic insulation coordination for a 400 VAC control panel (pollution degree 3). That means the contactor can withstand transient overvoltages from switching inductive loads or nearby lightning without flashover across the open contacts or to ground. Contact reliability is specified as one incorrect switching operation per 100 million cycles at 17 V, 1 mA — a dry-circuit rating that matters if you're switching low-energy signals from sensors or PLC outputs. Most auxiliary contactors don't state this; the fact that Siemens does means the silver-alloy contacts are designed for light-load fidelity, not just power switching. The mechanical life of a typical S00 contactor is 30 million operations. That's not a wear-limit guarantee for the contacts under load, but it tells you the armature and spring mechanism are built for high-cycle applications like conveyor interlocking or press control where the auxiliary contacts cycle every machine stroke. The S00 width of 45 mm means it occupies one standard module position on the rail. That covers most cabinet layouts except horizontal rail mounting. The contactor is intended for inside a cabinet with a higher enclosure rating. If your panel sees freeze-thaw condensation, the pollution degree 3 rating (conductive pollution) means the creepage distances are designed for occasional condensation, but you still want the cabinet sealed. Shock resistance is 10g for 5 ms and 5g for 10 ms. That's adequate for most industrial machinery but not for naval or heavy mobile equipment — if the panel is mounted on a vibrating conveyor or a press, you may need additional mechanical damping or a different contactor series. ## Wiring and compliance Solid conductor cross-section accepted is 2x (0.25 to 2.5 mm²). That's two conductors per clamp, which is useful for daisy-chaining control voltage or looping common wires through the contactor without extra terminal blocks. The 2.5 mm² upper limit handles standard 14 AWG control wiring; for longer runs or higher current you'd need to parallel terminals or step up to a larger contactor frame.","metaTitle":"Siemens 3RH1140-2AP00-ZW98 SIRIUS Auxiliary Contactor, Size","metaDescription":"Siemens SIRIUS 3RH1140-2AP00-ZW98 auxiliary contactor, size S00, 4 NO contacts, 10 A at 24 V, IP20 front, screw/snap-on mount, current production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"73 mm","Solid":"2x (0.25 ... 2.5 mm²)","Width":"45 mm","Height":"60 mm","at 50 Hz":"0.8 ... 1.1","at 60 Hz":"0.85 ... 1.1","1 Rated Value":"50 Hz","2 Rated Value":"60 Hz","During Storage":"-55 ... +80 °C","Leading Contact":"0","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","During Transport":"-55 ... +80 °C","Fastening Method":"screw and snap-on mounting","Shock Resistance":"10g / 5 ms and 5g / 10 ms","Delayed Switching":"0","Lagging Switching":"0","Mounting Position":"+/-180° rotation possible on vertical mounting surface; can be tilted forward and backward by +/- 22.5° on vertical mounting surface","Size Of Contactor":"S00","Product Brand Name":"SIRIUS","Contact Reliability":"one incorrect switching operation of 100 million switching operations (17 V, 1 mA)","Degree Of Pollution":"3","Product Designation":"Auxiliary contactor","at 24 V rated value":"10 A","Of Contactor Typical":"30 000 000","at 110 V rated value":"1 A","at 220 V rated value":"0.27 A","at 230 V rated value":"6 A","at 400 V rated value":"3 A","at 50 Hz rated value":"230 V","at 500 V rated value":"2 A","at 60 Hz rated value":"230 V","at 690 V rated value":"1 A","Instantaneous Contact":"4","For Auxiliary Contacts":"0","Make-Before-Break Switching":"0","Substance Prohibitance (Date)":"07/01/2006","protection class IP on the front":"IP20","Product Extension Auxiliary Switch":"Yes","Surge Voltage Resistance Rated Value":"6 kV","at AWG cables for auxiliary contacts":"2x (24 ... 14)","operational current at AC-12 maximum":"10 A","reference code according to IEC 81346-2":"K","Finely Stranded With Core End Processing":"2x (0.25 ... 1.5 mm²)","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","Touch Protection Against Electrical Shock":"finger-safe","with low demand rate according to SN 31920":"40 %","Finely Stranded Without Core End Processing":"2x (0.25 ... 2.5 mm²)","Of Auxiliary Contacts Instantaneous Contact":"0","apparent holding power of magnet coil at AC":"4.6 VA","apparent pick-up power of magnet coil at AC":"27 VA","with high demand rate according to SN 31920":"75 %","number of NC contacts for auxiliary contacts":"0","number of NO contacts for auxiliary contacts":"4","Type Of Voltage Of The Control Supply Voltage":"AC","Inductive Power Factor With Closing Power Of The Coil":"0.8","Identification Number And Letter For Switching Elements":"40 E","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Required Spacing With Side-By-Side Mounting At The Side":"0 mm","Inductive Power Factor With The Holding Power Of The Coil":"0.27","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","Type Of Electrical Connection For Auxiliary And Control Circuit":"Cage Clamp terminals","insulation voltage with degree of pollution 3 at AC rated value":"690 V","Of The Contactor With Added Electronically Optimized Auxiliary Switch Block Typical":"5 000 000","Design Of The Fuse Link For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 10 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=165061&mlfb=3RH1140-2AP00-ZW98","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1140-2AP00-ZW98/alternatives.json"},"ai":{"faq":[{"question":"What are the key contact ratings?","answer":"At 24 V rated value it carries 10 A; at 230 V rated value (50 Hz) it carries 6 A; at 400 V rated value it carries 3 A; at 690 V rated value it carries 1 A. These are thermal current limits for the contact stack."},{"question":"What is the physical size and mounting?","answer":"Width is 45 mm, height is 60 mm, depth is 73 mm. It mounts via screw or snap-on onto a 35 mm DIN rail. Mounting position allows +/-180° rotation on vertical surfaces and +/-22.5° tilt."},{"question":"What conductor sizes does it accept?","answer":"It accepts 2x (0.25 to 2.5 mm²) solid conductors per terminal clamp."},{"question":"What compliance documentation is available?","answer":"The substance prohibition date is 07/01/2006 (RoHS alignment). The IP20 front and 6 kV surge rating are consistent with IEC 60947-5-1. Full RoHS/REACH declarations are available through the manufacturer."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1140-2AP00-ZW98","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/3RH1140-2AP00-ZW98 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}